-O3

-----------------------------------------------------------

total 49064
-rwxr-xr-x 1 linux    10813 Oct 27 17:59 dmesg
-rw-r--r-- 1 linux     1204 Oct 20 21:41 dmesg.c
-rwxr-xr-x 1 linux    28532 Oct 27 17:59 expre
-rw-r--r-- 1 linux     6205 Oct 20 21:11 expre.c
-rwxr-xr-x 1 linux     9788 Oct 27 17:59 float_test
-rw-r--r-- 1 linux      175 Oct 20 20:33 float_test.c
-rw-r--r-- 1 linux      762 Oct 27 17:58 Makefile
-rwxr-xr-x 1 linux    32005 Oct 27 17:59 math
-rwxr-xr-x 1 linux     1158 Oct 27 08:43 math.c
-rwxr-xr-x 1 linux    18576 Oct 27 17:59 mmap_test
-rw-r--r-- 1 linux     1481 Oct 25 05:48 mmap_test.c
-rwxr-xr-x 1 linux    10929 Oct 27 17:59 mouse
-rw-r--r-- 1 linux      790 Oct 19 13:14 mouse.c
-rwxr-xr-x 1 linux     8983 Oct 27 17:59 page_size
-rw-r--r-- 1 linux      276 Oct 19 18:46 page_size.c
-rwxr-xr-x 1 linux    10515 Oct 27 17:59 prime
-rw-r--r-- 1 linux      867 Oct 27 10:38 prime.c
-rwxr-xr-x 1 linux 50010157 Oct 27 17:59 sbrktest
-rwxr-xr-x 1 linux     9661 Oct 27 17:59 sbrk_test
-rw-r--r-- 1 linux      224 Oct 19 18:45 sbrk_test.c
-rw-r--r-- 1 linux      563 Oct 19 18:45 sbrktest.c
-rwxr-xr-x 1 linux     9039 Oct 27 17:59 sqrt_test
-rw-r--r-- 1 linux      104 Oct 19 13:19 sqrt_test.c
-rw-r--r-- 1 linux     1261 Oct 27 17:58 test.1
-rw-r--r-- 1 linux        0 Oct 27 17:59 test.2
-rwxr-xr-x 1 linux      104 Oct 27 10:18 test.sh
